tests, dual-stack: configure ipv6 on dual stack cluster vmi
tests, dual-stack: configure ipv6 on dual stack cluster vmi

Dual stack cluster contains only one kube-dns service. Apparently,
this service serves both ipv4 and ipv6. However, its clusterIP is the ipv4
one. Therefore, it cannot be used to determine whether the cluster
supports ipv6 or not.
To determine this, vmi.Status.Interfaces[0].IPs is used.

Signed-off-by: Alona Kaplan <9ea2f88c7fe7e68aa51858b03e0d548211901b83@redhat.com>

davidvossel/kubevirt,davidvossel/kubevirt,davidvossel/kubevirt,davidvossel/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt